#include<reg51.h>
char i=100;
void main()
{
	TMOD=0x01;
	TH0=0xee;
	TL0=0x00;
	P1=0x00;
	EA=1;
	ET0=1;
	TR0=1;
	while(1);
	{;}
}
void timer0() interrupt 1
{
	TH0=0xee;
	TH0=0x00;
	i--;
	if(i<=0)
	{
			P1=~P1;
			i=100;
	}
}
